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 Yearling
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May
12
comment How many bytes occupy a simple nmap to a host?
Nmap itself can tell you how many bytes it sends for some scan types, when you use the -v flag: Raw packets sent: 1175 (51.676KB) | Rcvd: 1169 (46.776KB)
Mar
2
awarded  Yearling
Jan
29
answered Output only the IP addresses of the online machines with nmap
Jan
10
comment nmap -sn lists all active hosts on my network, but nmap -sL does not
Great answer. Your note about ICMP Echo Request packets is not quite right, though. Nmap uses lots of techniques to discover hosts, but ICMP Echo Request is hardly ever used on a local LAN. Instead Nmap uses simple ARP requests, which are a prerequisite to any IP communication on Ethernet-like links.
Dec
27
revised Nmap -sn: scan or no scan?
Notify of correction to official documentation.
Nov
12
comment Nmap script execution to detect heartbleed is failing
@user53029 I'd recommend removing the old one, as long as you have the required dependencies. I use checkinstall to make dpkg manage it and allow easy removal and upgrades. Just be sure to apt-get install libssl-dev before you build; all other build dependencies should be included (apart from a compiler, of course!).
Nov
12
awarded  Explainer
Nov
11
revised Nmap script execution to detect heartbleed is failing
Fix copy-paste-truncated link
Nov
11
suggested approved edit on Nmap script execution to detect heartbleed is failing
Nov
11
answered Nmap script execution to detect heartbleed is failing
Oct
20
answered Can masscan use the Nmap Scripting Engine?
Sep
12
comment nmap ipv6 os scan fails
@SebastianBrestin The current version of Nmap is 6.47. IPv4 and IPv6 use completely different fingerprinting engines with separate databases, but the recommendations still apply.
Sep
11
answered nmap ipv6 os scan fails
Jul
4
awarded  Good Answer
Jul
1
awarded  Nice Answer
Jun
30
revised How to close ports in Linux?
Add info about how to close the port.
Jun
30
comment How to scan for heartbleed vulnerability with nmap from Ubuntu 12.04?
@drs Thanks for the suggestion and the edit. For posterity, I had been using tinyurl.com/nmap-heartbleed for ease of communication when the Heartbleed issue first came out.
Jun
30
answered How to close ports in Linux?
Jun
25
answered How to scan for heartbleed vulnerability with nmap from Ubuntu 12.04?
Mar
2
awarded  Yearling